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Biomedical subjects

E Spiechowicz

Publications and source records attributed to E Spiechowicz.

At least 37 records · Page 2Linked to original sources
PubMed1983

Experimental investigations on sensitivity to nickel present in alloys used in dentistry carried out on guinea pigs previously sensitized to this metal.

Experimental investigation on sensitivity to nickel present in dental alloys has been carried out on guinea pigs previously sensitized to this metal. The metal plates containing nickel have been sutured to the oral mucosa in such a way that condition of alloys contact with mucosa were possible similar to those present in the mouth of the patient wearing fixed prosthesis. The results of macro and micro examination has not shown any morphological differences between experimental and control material.

Animals↗
PubMedDate not supplied

A long-term follow-up of allergy to nickel among fixed prostheses wearers.

Skin allergic hypersensitivity to nickel is well known and well documented in the professional literature. Sixteen partially dentate patients with long-standing histories of recurrent hypersensitive skin reaction to nickel were entered into a clinical trial in 1979. All the patients received crowns or bridges made of an alloy containing 66% of nickel with porcelain fused to the metal framework. During the first three years, annual clinical dental and dermatological investigations were performed on all the subjects, including repeated patch tests. Follow-up examinations took place in 1988 and 1994. None of the subjects had any mucosal or systemic reaction following oral exposure to the nickel containing alloy, nor the exacerbations of skin lesions.

Adult↗
PubMedDate not supplied

Plaque accumulation on crowns made of various materials.

The rate of plaque accumulation on various materials used for fixed prostheses was investigated, and the composition of plaque formed on each surface was evaluated. Enamel, metal, acrylic resin, and porcelain surfaces were studied. Amounts of plaque that formed on the teeth and fixed restorations were scored using the method of Silness and Loe. Different individuals formed plaque at different rates, and the character and quantity of the plaque was different on the various materials. In a second study, acrylic resin, metal, and porcelain crowns were made for each of 10 patients. The amount of plaque absorbed onto each material after 1, 3, and 24 hours was recorded using scanning electron microscopy. The samples of dental plaque at 24 hours on each type of crown material were collected and investigated in a CHN Analyzer 184, revealing differences in the chemical composition of plaque adsorbed onto different surfaces. The results of SEM examination and biochemical analysis are presented.

Acrylic Resins↗
PubMedDate not supplied

[Remote results of prosthetic treatment of patients with nickel hypersensitivity].

Economic reasons are the cause that ever more frequently prosthetic replacements are made from alloys other than gold. The most widely used are: alloys based on nickel and chromium, and stainless steel. In some alloys the content of nickel may be over 80%. The studies carried out in early 1980s showed that these materials had a higher hardness, mechanical strength and elasticity module than gold alloys. Nickel is one of the main components of these alloys, and its compounds may exert a harmful toxic, and even more frequently, allergic effect on the human organism. In the light of a survey of the literature and own clinical, experimental and epidemiological investigations it was tried to trace the effect of dental replacements made of nickel-containing alloys on the mucous membranes and skin of subjects with confirmed hypersensitivity to nickel. The studied material comprised a group of patients selected at random from those attending the Allergology Outpatient Clinic at the Department of Dermatology, Medical Academy in Warsaw, who had verified hypersensitivity to nickel and had indications to preparation of crowns and bridges for wearing. In each case before and after prosthetic treatment and before any control stomatological examination patch tests were done for demonstrating nickel hypersensitivity. In all patients permanent prostheses were done from an allow containing up to 70% of nickel with baked porcelain. In most cases fragments of oral mucosa were taken for histological examination. The patients were examined twice yearly. The longest follow-up is presently over 8 years. In no case exacerbation of hypersensitivity reactions was noted.

Crowns↗
PubMedDate not supplied

[Application of therapeutic laser in treatment of the selected chronic illnesses of the oral cavity].

Clinical observations on therapeutic laser applications in treatment of the selected chronic illnesses of the oral cavity have been presented by the authors in the paper. Obtaining satisfactory results in most of the patients treated seems to confirm laser-therapy usefulness in stomatology as well. Fast regression of the pathological changes during treatment of chronically recurrent aphthae and simplex herpes as well as diminution in sufferings in most patients with trigeminal neuralgia just after single irradiation are worthy of particular notice.

Herpes Simplex↗